There had been an influx of Surface-related news recently, first starting with specifications of the Surface Pro 2 leaked to the internet. Soon after, details of two Surface accessories – Power Cover and Docking Station – were revealed. Today, Microsoft has officially sent out invites to press media for their upcoming Surface 2 unveil event, scheduled to be held on September 23rd in New York City. Check out the invitation below, courtesy of LiveSino.net:

Whilst the invitation does not indicate exactly what will be unveiled at the event, it is widely speculated that the Surface 2 (running on Windows RT 8.1), Surface Pro 2, as well as the Power Cover and Docking Station will be announced on the day. Below is a recap of what we know for each of them:

Power Cover: Keyboard cover similar to Type Cover, but with battery pack to extend the battery life of the Surface. 1.1 pounds (520g) and 0.38 inches (9.75mm) thick. Compatible with the current Surface Pro, Surface 2, and Surface Pro 2

Microsoft is also planning a Surface “mini”, which is supposed to be a smaller 7″ or 8″ tablet intended to go against the iPad mini. However, this device is not expected to be announced during the September 23 event.